Composition

The music consists of a light, organ-based jam with Wright utilizing the Phrygian mode and an accompanying bass guitar playing just one tone (in this case, D) in octaves, with a segue into the song's only lyrics: the title of the song whispered menacingly, followed by a Roger Waters scream. The song becomes much louder and more intense before gradually settling down again. In the heavier parts and later, quieter parts, David Gilmour can be heard with guitar and scat vocals; in concert, Gilmour would often sing along with his guitar line.